Nominal Size: 1/2"
Thread: 13 TPI (Coarse)
Length: 8-1/2"
Thread Length: Partial
Material: Steel
Finish: Zinc
Head Style: Carriage
Hardness: Grade 2 / A307
Type: Carriage Bolt
Square-Depth: 9/32"
Box of 22.
A carriage bolt has a domed or countersunk head, and the shank is topped by a short square section under the head. The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened.
